Spatial Distribution of Global Cultivated Land and Its Variation between 2000 and 2010, from Both Agro-Ecological and Geopolitical Perspectives
Spatial Distribution of Global Cultivated Land and Its Variation between 2000 and 2010, from Both Agro-Ecological and Geopolitical Perspectives
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农业生态和地缘政治视角下2000-2010年全球耕地空间分布及其变化
DOI：
10.3390/su11051242
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发表时间：
2019
期刊：
影响因子：
3.9
通讯作者：
Qiao Weifeng
中科院分区：
文献类型：
--
作者：
Cao Min;Zhu Yanhui;Lu Guonian;Chen Min;Qiao Weifeng
粮食安全需要全面了解全球范围内耕地变化的空间特征。特别是，全球耕地变化的空间异质性需要用高空间分辨率数据进行评估。利用2000年和2010年GlobeLand 30 30 m空间分辨率数据，分析全球耕地的空间分布及其变化特征。计算了18个农业生态区、32个地缘政治和社会经济区域以及283个世界区域的耕地比例和耕地利用变化率。结果表明：（1）我国耕地面积主要分布在气候温和、水分适中的地区，（2）耕地面积与GDP和人口有关，耕地增减与农村人口、政策鼓励、城市化和经济发展有关;（3）由于社会经济条件的不同，农业经济区内的耕地比例和土地利用变化率差异很大，由于自然条件的不同，地缘政治区域内的价值也不同。
Food security requires a thorough understanding of the spatial characteristics of cultivated land changes on a global scale. In particular, the spatial heterogeneity of global cultivated land changes needs to be evaluated with high spatial resolution data. This study aims to analyse the spatial distribution of global cultivated land and the characteristics of its variation, by using GlobeLand30 data for 2000 and 2010 with a 30-m spatial resolution. The cultivated land percentage and rate of cultivated land use change are calculated based on 18 agro-ecological zones (AEZs), 32 geopolitical and socioeconomic regions, and 283 world regions. The results show that (1) more cultivated land is located in regions under a temperate climate and moderate moisture conditions; (2) the percentage of cultivated land is related to the gross domestic product (GDP) and population, while increases and decreases in cultivated land are related to the rural population, policy encouragement, urbanization, and economic development; and (3) the percentage of cultivated land and rate of land use change within an AEZ vary greatly due to the different socioeconomic conditions, and the values within a geopolitical area also vary, due to different natural conditions.